Cat Electrical 797 Truck Starting and Start Aid Electrical Circuits System Schematic Manual - PDF DO

RENR2681 November 2000

797 Truck Starting and Start Aid Electrical Circuits 5YW1-UP

©2000 Caterpillar All Rights Reserved

Printed in U.S.A.

CONN 22 12 PIN E-C2 8N1520

1 2

R984-A1 GY-14 R317-A3 YL-14

1 3 4 5 6 13 15 16 17 18

T807-J255 WH-16 128-J240 RD-14 T998-J256 BR-16 T810-J257 BR-16 T317-J310 YL-14 R807-J262 WH-16 127-J238 RD-14 R998-J263 BR-16 R810-J264 BR-16 R317-J311 YL-14

START AID BREAKER 1 6T3644

J-C13 8N1519 127-J238 RD-14 128-J240 RD-14

127-J237 RD-12 128-J239 RD-12

2 3

127-E22 RD-12 128-E23 RD-12

20A

101-EG1

RD-10

20A

101-EF1 RD-10

K-C5 3E7996

RENR2680 RENR2684 RENR2680

RENR2691

R317-J311 YL-14 T317-J310 YL-14 R810-J264 BR-16 T810-J257 BR-16 T807-J255 WH-16 R807-J262 WH-16 T998-J256 BR-16 R998-J263 BR-16

RENR2684

T984-A8 GY-14 T317-A11 YL-14

3

THROTTLE BACKUP SW 1701302

A B 1 2 3 4 5 6 C D

2 3

START AID SW 1701303

T984-A9 GY-14 T317-A12 YL-14

R810-A38 BR-16 R317-A39 YL-14

127-A32 RD-14

K-C1 1130580 9 39 39 39 40

K-C19 1552272

X720-K11 GN-16 308-K67 YL-16 326-K68 PU-16 307-K69 OR-16 105-K70 RD-16

R 1 2 3 4

YL PU OR BR

C OFF S ON B ST

KEY START SW 1107887

CONN 35 40 PIN

H867-J444 YL-16 T317-J310 YL-14 R317-J311 YL-14 301-J433 BU-16

RENR2687 J-C34 1607690 H867-J422 YL-16 H867-J443 YL-16 H867-J444 YL-16 10 11 12

12 30 31 36

ON/OFF RET 1-4 KEY SWITCH START START RELAY CHASSIS CONTROL 1499994

J-C47 9X1343 CONN 4 40 PIN

AN-C19 9X0141

J-C88 1153082

JUNCTION BLOCK 21 TERM

H867-AN91 YL-16 T317-AN82 YL-16 R317-AN81 YL-16 301-AN90 BU-16

START AID PULL IN RELAY 1 3E5239

H867-J422 YL-16 307-J424 OR-16 301-J433 BU-16

86

85 87 87a

1 5 2 4 3

START AID HOLD RELAY 1 3E5239

30

86

85 87 87a

RENR2680

X720-J351 GN-16 308-J299 YL-16 326-J423 PU-16 307-J424 OR-16 105-J77 RD-16

A-C5 9X1054

1 5 2 4 3

START AID PULL IN RELAY 2 3E5239

30

86

85 87 87a

1 5 2 4 3

A-C4 9X1054

RENR2680

36 39 68

START AID HOLD RELAY 2 3E5239

A-C3 9X1054

30

86

85

1 5 2 4 3

A-C2 9X1054

87 87a

R984-A2 GY-14 R807-A26 WH-16 127-A27 RD-14 127-A28 RD-14

128-A18 RD-14 T998-A21 BR-16 T810-A23 BR-16 T317-A24 YL-14

T984-A8 GY-14 T807-A13 WH-16 128-A14 RD-14 128-A15 RD-14

J-C10 3E6286

30

FRONT ENGINE START AID SOL 1 AN-C12 1238773 1552269 1 2

R317-AN66 YL-16 200-AN62 BK-16

BU-16 BK-16

FRONT ENGINE START AID SOL 2 AN-C13 1238773 1552269 CONN 55 40 PIN

11 19 24 37

P-C5 1130581 R810-P9 BR-16 R998-P14 BR-16 R807-P15 WH-16

T810-CN20 T998-CN25 T807-CN29 X720-CN39

CN-C1 8N1518 BR-16 BR-16 WH-16 GN-16

CN-C4 3E6287

14 20 23

T810-CN20 BR-16 R810-CN21 BR-16 T998-CN25 BR-16 R998-CN26 BR-16 R807-CN28 WH-16 T807-CN29 WH-16 X720-CN39 GN-16

J-C51 9X7148 11 14 19 20 23 24 37

T810-J257 BR-16 R810-J264 BR-16 T998-J256 BR-16 R998-J263 BR-16 R807-J262 WH-16 T807-J255 WH-16 X720-J351 GN-16

CONN 8 40 PIN

R810-CN21 BR-16 R998-CN26 BR-16 R807-CN28 WH-16

CONN 57 40PIN FRONT ENGINE ECM 1328900

P-C3 1010204 R807-P15 WH-16 RENR2689

RENR2689

R998-P47 R998-P58 R998-P14 R998-P60 R998-P61 R998-P62 R998-P63

BR-16 BR-16 BR-16 BR-16 BR-16 BR-16 BR-16

R998-P64 BR-16

22

START AID HOLD RELAY 1

29

DIGITAL SENSOR RETURN CHASSIS GROUND

40

R810-P9 BR-16

START AID PULL IN RELAY 1

PA-C16 3E6286 X720-PA154 GN-16

24

PA-C1 1010204 T807-PA18 WH-16 RENR2690

RENR2690

T998-PA157 T998-PA106 T998-PA107 T998-PA14 T998-PA108 T998-PA109 T998-PA110

BR-16 BR-16 BR-16 BR-16 BR-16 BR-16 BR-16

T998-PA51

T810-PA7

BR-16

BR-18

22

29

40

1 2

R317-AN65 YL-16 200-AN61 BK-16

BU-16 BK-16

REAR ENGINE START AID SOL 1 AN-C14 1238773 1552269

R807-J262 WH-16 R810-J264 BR-16 T810-J257 BR-16 R998-J263 BR-16 T807-J255 WH-16 T998-J256 BR-16 X720-J351 GN-16

RENR2680

T810-PA7 BR-18 T998-PA14 BR-16 T807-PA18 WH-16 X720-PA154 GN-16

R317-AN81 YL-16

CN-C3 3E6286

RENR2680

PA-C30 1130580

ENGINE ECM MASTER 1153055 START AID SWITCH

REAR ENGINE ECM 1328900 START AID HOLD RELAY 2

DIGITAL SENSOR RETURN

200-AN57 BK-14

T317-AN67 YL-16 200-AN59 BK-16

T317-AN82 YL-16

T317-AN68 YL-16 200-AN60 BK-16

1 2

AN-C15 1552269

200-AN75 BK-14 200-AN58 BK-14 200-AN50 BK-14 200-AN57 BK-14 200-AN52 BK-14 200-AN88 BK-14 200-AN87 BK-16 200-AN86 BK-14 200-AN85 BK-14 200-AN102 BK-16

1 2

R317-A4 YL-14

T984-A7 GY-14 T317-A10 YL-14

127-A31 RD-14

R984-A6 GY-14 R317-A5 YL-14

A-C18 1552269

START AID RESISTOR 4 1246704

614-K55 PU-16 R982-K40 YL-16 R982-K41 YL-16 X720-K11 GN-16 X998-K65 BR-16

RENR2683

127-A29 RD-14

1 2

2

K-C6 3E7996

A-C17 1552269

START AID RESISTOR 3 1246704

A B 1 2 3 4 5 6 C D

RENR2691

R984-A2 GY-14 R317-A4 YL-14 RENR2680

1 2

X717-K9 YL-16 X998-K64 BR-16

START AID BREAKER 2 6T3644

A-C16 1552269

START AID RESISTOR 2 1246704

614-K57 PU-16 R982-K40 YL-16

X998-K10 BR-16 X998-K65 BR-16

T807-A13 WH-16 128-A17 RD-14 T998-A21 BR-16 T810-A23 BR-16 T317-A25 YL-14 R807-A26 WH-16 127-A30 RD-14 R998-A36 BR-16 R810-A38 BR-16 R317-A40 YL-14

R998-A36 BR-16 R810-A38 BR-16 R317-A40 YL-14

127-A30 RD-14

R807-A26 WH-16

T998-A21 BR-16 T810-A23 BR-16 T317-A25 YL-14

A-C15 1552269

START AID RESISTOR 1 1246704

128-A17 RD-14

T807-A13 WH-16

CONN 29 40 PIN A-C1 J-C15 3E6286 1130580

BU-16 BK-16

REAR ENGINE START AID SOL 2 1238773 BU-16 BK-16

1 2

AIR START SOL AN-C7 5T4434 7N9738 1 2

301-AN90 BU-16 H867-AN91 YL-16

Media Number

GN GN

797 Truck Electrical System Schematic Titles

RENR2570

797 Truck Electrical System

RENR2680

Power Distribution and Ground Circuits

RENR2681

Starting and Start Aid Circuits

RENR2682

Integrated Brake Control Circuit

RENR2683

Vital Information Management System (VIMS)

RENR2684

Panel Lamp and Miscellaneous Circuits

RENR2685

Washer / Wiper and Turn Signal Circuits

RENR2686

Heater and Air Conditioning Circuits

RENR2687

Chassis Control Circuit

RENR2688

Transmission Control Circuit

RENR2689

Front Engine Control Circuit

RENR2690

Rear Engine Control Circuit

RENR2691

Master Engine Control Circuit

RENR2692

Schematic Tables and Symbol Definitions

START AID PULL IN RELAY 2

RENR2681 797 TRUCK STARTING AND START AID CIRCUITS